Brake Proportioning/Combination Valve: Testing and Inspection

DUAL PROPORTIONING VALVE INSPECTION
1. Remove the battery.





2. Connect the SST or equivalent to the brake pipes by using the adapters as shown in the figure.

Adapter and flare nut tightening torque 13 - 21 Nm (1.3 - 2.2 kgf.m, 9.4 - 15 ft. lbs.)

3. Bleed the air from the brake system. (Refer to Brake Bleeding.)
4. Depress the brake pedal until the master cylinder pressure equals A; then record rear brake pressure A'.





5. Depress the brake pedal again, and apply additional pressure until the pressure equals B. Then record pressure B'.
6. If not within the specification, replace the dual proportioning valve.